Alarm



- March 24, 1925. 1,530,883

7 F. E. CHAPMAN ALARM Filed Nov. 25, 1922 Patented Mar. 24, 1925.

FREDERICK E. CHAPMAN, OFMIDDLETOWN, coNNEoricur.

ALARM.

' Application filed November 25, 1922. Serial No. 603,197.

To all whom it'mag concern:

Be it known that I, FREDERICK E. GHAP MAN, a. citizen of the United States, and a resident of Middletowmwin the county of Middlesex and State of Connecticut, have invented new and Improved Alarms, of which the following is a specification.

My invention relates to the class of devices especially designed to give warning of the presenceof fire or of a burglar, and an objectof my invention, amongothers, is to provide a device of a reliable character that shall operate both as a fire and as a burglar alarm.

One form of device embodying my invention and in the construction and use of which the objects herein set out, as well as others, may be attained, is illustrated in the accompanying drawings in Which Figure 1 is a diagrammatic View illustrating the arrangement of my improved alarm.

Figure 2 is a detail view, scale enlarged, illustrating one of the alarms, with parts broken away to show construction.

Figure 3 is a detail view, scale enlarged, showing another of the alarms.

Figure 4 is a view of a fragment of an alarm showing one manner of operating it.

Figure 5 is a detail view illustrating the construction and operation of the bell sounders.

My improved fire and burglar alarm comprises a system including a number of alarm devices that may be located in various positions and that may be connected one with another to operate independently or simultaneously as may be desired, such system be ing diagrammatically illustrated in Figure 1 in which there is an alarm designed for operation under conditions of fire and ineluding a base 6 having a disc 7 rotatably mounted thereon with a connection 8 ex tending from the disc to an actuating weight 9, shown in dotted outlines in Figure 3, said weight being supported on a trap 10*pivotally mounted on a case 11 and extending underneath said case in which the weight 9 is located. This trap embodies a holder 12 rigidly connected therewith and extending into a pan 13, to the bottom of which it is secured by any suitable solder that will fuse under comparatively lowtemperatures. In order to insure the fusing of the solder the pan may be supplied with some substance that will ignite under a comparatively low temperature. An arrester 14. in

the form ofa flexible connection extends from the weight 9 to a flexible support 15 secured to the base 6. An actuating connection '16 extends from the disc 7 to any device to be actuated thereby, as shown in Fig- .ure 1 this connection extending to a bell alarm 17 and also to a second alarm device similar to that ust above described.

The bell illustrated herein is supportedon a base 18 and comprises a'gong 19 secured to the base to be sounded by a striker 20. g

This striker is pivotally mounted in a case 21 and is spring pressed toward the bell as shown in Figure 5. A strut 22 is interposed between the tail of the striker 20 and a wall of the case, this strut being connected with or secured to the connection 16.

From this construction it willbe seen that when the trap 10 is released under abnormal heat conditionsthe weight 9 will be released and thereby the disc 7 will be rapidly rotated, pulling upon the connection 16 and sounding the gong 19. The pull of the weight will be stopped by the arrester 1a 99 without undue shock upon the apparatus. The connection 16 is a branched connection, and one branch extends to a retainer 23 interposed between a pivotally mounted trap 24 and a support 25 to retain the trap in its raised position, as shown in Figure 1. This trap supports av weight 26 as hereinbefore described, located in a case 27, said weight being connected with a disc 7, as hereinbefore described, said disc being connected in the same manner as hereinabove set forth with a second bell alarm 17.

The-weight'26 in the case 27 has a recess in its end that receives a spring 28 that,

when the trap is released, by operation of the jointed retainer 23, will strike the button 29 of a sounding alarm 30, as herein shown in the form of a horn.

By means of these second alarms and the connections above noted the alarms may be given in places remote from that in which alarm first above mentioned is located.

Either of the alarms maybe utilized for operation to give warning of a burglar, as

shown in Figure 1, the alarm embodying a 1 case 27 being connected'by a flexible member 31 with a door 32 whereby said alarm will be sounded should any attempt be made to open the door.

In Figure 4: I have illustrated another means for releasing the trap 10, this comprising a flexible holder engaging a support 34-and secured at its endsto-posts 3536, thedatter projecting from-1the-bot-v tom of the trap 10. The support 34 has. a pan 37 to receive a material thatwillignite under low temperature and thereby burn the cord 83 to release the trap 10, the latter 511131 ortin awei 'ht as hereinbefore described.

2: a: I cla1m 1. An alarm comprising a rotatable disc,

a connection extending from'said disc toan alarm device, a weight connectedwith said disc, a trap to'support said-weight and'render it inactive, and a releasable holder for said trap adaptedto be -operated to release the weight and permit operation of the alarm upon rotation of the disc. I

2. An alarm comprising a rotatable disc, a connectionextended "from said disc to an alarm device, a weight connectedwvith said disc, a trap to support said weight and render it inactive, means for operating the trap to release the weight andipermit sounding vof the alarm, and means for yieldingly ar- 4. An alarmcomprismga rotatable disc, a 1

connection extending from said discto an alarm device,--a weight connected witlrsaid disc, a trap tosupport S211ClW81gl1tilHCl render it inactive, a releasable holder for said -trap, anda plurality of connect-ions extendingfrom-said holder to be 'operated under different conditions. v

FREDERICK -E. CHAPMAN. 

